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Evaluation of Tsunami Loads on Wood Frame Walls at Full Scale

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  • The performance of full-scale light-frame wood walls subjected to wave loading was examined using the Large Wave Flume of the Network for Earthquake Engineering (NEES) Tsunami Facility at Oregon State University. The hydrodynamic conditions (water level and bore speed) and structural response (horizontal force, pressure, and deflection) were observed for a range of incident tsunami heights and for several wood wall framing configurations. The walls were tested at the same cross-shore location with a dry bed condition. For each tsunami wave height tested, the force and pressure profiles showed a transient peak force followed by a period of sustained quasi-static force. The ratio of the transient force to quasi-static force was 2.2. These experimental values were compared to the predicted values using the linear momentum equation, and it was found that the equation predicted the measured forces on the vertical wall within an accuracy of approximately 20% without using a momentum correction coefficient. The experiments also showed that the more flexible 2x4 wall resulted in lower peak forces when compared to the 2x6 walls subjected to similar tsunami heights. However, the 2x6 walls were able to withstand larger waves before failure.
  • Keywords: light-frame wood walls, impact, tsunami mitigation, tsunami forces, tsunami damage
  • Keywords: light-frame wood walls, impact, tsunami mitigation, tsunami forces, tsunami damage
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  • Linton, D., Gupta, R., Cox, D., van de Lindt, J., Oshnack, M.E., & Clauson, M. (2013). Evaluation of tsunami loads on wood-frame walls at full scale. Journal of Structural Engineering, 139(8), 1318-1325. doi:10.1061/(ASCE)ST.1943-541X.0000644
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  • 139
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  • 8
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  • This research was supported by the National Science Foundation under Grant No. CMMI-0530759. The tsunami facility is supported in part supported by the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Science Foundation under Award Number CMMI-0402490.
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